<html lang="en" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
<title>LogOut</title>
<head>
    <style type="text/css">
        #content{
            width: 350px;
            margin: auto;
        }
    </style>
</head>
<body>
 <h1>退出成功</h1>
</body>
</html>